| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | 6.88 | 199006070_OAK_TEX |
| Chicago White Sox | CHA | 2.52 | 199006050_SEA_CHA |
| Cincinnati Reds | CIN | 2.05 | 199006050_CIN_SFN |
| New York Mets | NYN | 1.72 | 199006060_WAS_NYN |
| Cleveland Indians | CLE | 1.18 | 199006070_DET_CLE |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Atlanta Braves | ATL | -2.92 | 199006060_ATL_LAN |
| Philadelphia Phillies | PHI | -2.24 | 199006070_PHI_CHN |
| Chicago Cubs | CHN | -1.93 | 199006060_CHN_PIT |
| Montreal Expos | WAS | -1.51 | 199006060_WAS_NYN |
| California Angels | ANA | -1.27 | 199006050_ANA_KCA |
Based on accumulated WAA for this season up to 1990-06-07.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +011+ | 2.86 | Gregg Olson | 34 | BAL |
| +014+ | 2.71 | Mark Eichhorn | 44.3 | ANA |
| +021+ | 2.34 | Jeff Brantley | 42.7 | SFN |
| +040+ | 1.88 | Greg Harris | 41.3 | SDN |
| +043+ | 1.83 | Bill Landrum | 27 | PIT |
| +044+ | 1.82 | Dennis Eckersley | 25 | OAK |
| +048+ | 1.68 | Doug Jones | 29.7 | CLE |
| +052+ | 1.64 | Rob Dibble | 30.3 | CIN |
| +053+ | 1.61 | Larry Andersen | 32 | HOU |
| +054+ | 1.6 | Mark Williamson | 34 | BAL |
| +055+ | 1.59 | Wayne Edwards | 27 | CHA |
| +057+ | 1.58 | Mike Schooler | 26.7 | SEA |
| +058+ | 1.56 | Jeff Montgomery | 38.3 | KCA |
| +060+ | 1.53 | Barry Jones | 26.3 | CHA |
| +070+ | 1.35 | Bill Sampen | 29 | WAS |
| +073+ | 1.34 | Gene Nelson | 26.7 | OAK |
| +071+ | 1.34 | Rick Aguilera | 26 | MIN |
| +074+ | 1.33 | Paul Gibson | 35.3 | DET |
| +075+ | 1.32 | Craig Lefferts | 26 | SDN |
| +077+ | 1.31 | Dennis Lamp | 39.7 | BOS |
| +079+ | 1.29 | Terry Leach | 32.3 | MIN |
| +083+ | 1.26 | Bill Swift | 34.7 | SEA |
| +082+ | 1.26 | Steve Farr | 32.7 | KCA |
| XXXXX | 1.25 | Keith Comstock | 20.7 | SEA |
| XXXXX | 1.24 | Edwin Nunez | 34.3 | DET |
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